blocks|key|430357|text|我建议您尝试当前发布的候选版本v1.2html，因为1.1+(我猜您会使用它)存在一些RC2布局问题|type|unstyled|depth|inlineStyleRanges|entityRanges|data|430358|commons-email+1.2+RC2|offset|length|430359|entityMap|0|LINK|mutability|MUTABLE|url|http://people.apache.org/builds/commons/email/1.2/RC2/staged/commons-email/commons-email/1.2/^0|0|0|L|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

I suggest you try the current release candidate v1.2 RC2 as 1.1 (I guess you use that) has some html layout problems

<a href="http://people.apache.org/builds/commons/email/1.2/RC2/staged/commons-email/commons-email/1.2/" rel="nofollow noreferrer">commons-email 1.2 RC2</a>

blocks|key|1734294|text|email.attach(new+ByteArrayDataSource(pdfBytes,+"application/pdf"),
++++++"document.pdf",+"Document+description",
+++++++EmailAttachment.ATTACHMENT);|type|code-block|depth|inlineStyleRanges|entityRanges|data|syntax|javascript|1734295|这适用于commons-email+1.1。|unstyled|1734296|pdfBytes应该是包含pdf文档字节的byte[]。如果这不适合您，您可以尝试其他DataSource实现，但我不能保证它们会工作(尽管它们应该能工作)。|offset|length|style|CODE|1734297|(上图是org.apache.commons.mail.ByteArrayDataSource)|1734298|entityMap^0|0|0|0|8|L|6|17|A|0|4|17|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$B|C]]|$1|D|3|E|5|F|7|R|8|@]|9|@]|A|$]]|$1|G|3|H|5|F|7|S|8|@$I|T|J|U|K|L]|$I|V|J|W|K|L]|$I|X|J|Y|K|L]]|9|@]|A|$]]|$1|M|3|N|5|F|7|Z|8|@$I|10|J|11|K|L]]|9|@]|A|$]]|$1|O|3|-4|5|F|7|12|8|@]|9|@]|A|$]]]|P|$]]

<pre><code>email.attach(new ByteArrayDataSource(pdfBytes, "application/pdf"),
 "document.pdf", "Document description",
 EmailAttachment.ATTACHMENT);
</code></pre>

this works with commons-email 1.1.

<code>pdfBytes</code> should be a <code>byte[]</code> containing the bytes of the pdf document. If that doesn't suit you, you can try other <code>DataSource</code> implementations, but I can't guarantee they'd work (although they should). 

(The one above is <code>org.apache.commons.mail.ByteArrayDataSource</code>)

blocks|key|327385|text|请注意，使用：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|327386|email.attach(new+ByteArrayDataSource(pdfBytes,+"application/pdf"),
++++++"document.pdf",+"Document+description",
+++++++EmailAttachment.ATTACHMENT);|code-block|syntax|javascript|327387|在HtmlEmail上，使用commons-email1.1会导致生成的电子邮件将其消息(文本或html)封装为附件。|offset|length|style|CODE|327388|切换到MultiPartEmail修复了此问题。|327389|entityMap^0|0|0|1|9|0|3|E|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@$I|T|J|U|K|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@$I|W|J|X|K|L]]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|P|$]]

Note that using: 

<pre><code>email.attach(new ByteArrayDataSource(pdfBytes, "application/pdf"),
 "document.pdf", "Document description",
 EmailAttachment.ATTACHMENT);
</code></pre>

on a <code>HtmlEmail</code> using commons-email 1.1 causes the resulting email to have its message (text or html) enclosed as an attachment.

Switching to a <code>MultiPartEmail</code> fixed this.

blocks|key|1729111|text|我使用HtmlEmail#embed(URL，String)方法：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1729112|File+pdf+=+new+File(pdfPath);
email.embed(pdf.toURI().toURL(),+pdf.getName)|code-block|syntax|javascript|1729113|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I use the HtmlEmail#embed(URL, String) method:

<pre><code>File pdf = new File(pdfPath);
email.embed(pdf.toURI().toURL(), pdf.getName)
</code></pre>

blocks|key|327427|text|在最新版本(1.5)上，以下代码适用于我|type|unstyled|depth|inlineStyleRanges|entityRanges|data|327428|+email.attach(new+FileDataSource(attachmentFileObject),+"AttachmentName",+"Description");|code-block|syntax|javascript|327429|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

On latest release (1.5) the following code worked for me

<pre><code> email.attach(new FileDataSource(attachmentFileObject), "AttachmentName", "Description");
</code></pre>

blocks|key|1734409|text|您可以在Java中使用向上转换和向下转换。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1734410|1734411|HtmlEmail扩展了MultiPartEmail，attacch方法返回的MultiPartEmail将class.|ordered-list-item|1734412|HtmlEmail转换为MultiPartEmail，然后使用tempEmail.attach+attacch将MultiPartEmail转换回HtmlEmail类。|1734413|1734414|HtmlEmail+email；MultiPartEmail+tempEmail；//+HtmlEmail+->+MultiPartEmail+tempEmail+=+HtmlEmail+HtmlEmail()；//添加附件EmailAttachment+=新EmailAttachment()；attachment.setURL(新URL(fileURL))；attachment.setDisposition(EmailAttachment.ATTACHMENT)；attachment.setName(MimeUtility.encodeText(fileName))；tempEmail+=tempEmail.attach(附件)；//+MultiPartEmail+->+HtmlEmail+email+=HtmlEmail|1734415|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|N|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|O|8|@]|9|@]|A|$]]|$1|F|3|G|5|E|7|P|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|L|$]]

You can use up-casting and down-casting in Java.

<ol>
<li>HtmlEmail extends MultiPartEmail, and attacch method returns the
MultiPartEmail class.</li>
<li>HtmlEmail will be converted to MultiPartEmail, and then use
tempEmail.attach (attachment).</li>
<li>Then MultiPartEmail will be converted back to HtmlEmail class.

<pre><code>HtmlEmail email;
MultiPartEmail tempEmail;

// HtmlEmail -&gt; MultiPartEmail
tempEmail = new HtmlEmail();

// Add a attachment
EmailAttachment attachment = new EmailAttachment();
attachment.setURL(new URL(fileURL));
attachment.setDisposition(EmailAttachment.ATTACHMENT);
attachment.setName(MimeUtility.encodeText(fileName));
tempEmail = tempEmail.attach(attachment);

// MultiPartEmail -&gt; HtmlEmail
email = (HtmlEmail)tempEmail;
</code></pre></li>
</ol>

I'm using <a href="http://commons.apache.org/email/userguide.html" rel="noreferrer">Apache Commons Email 1.1</a> and I can't figure out how to attach a file to an HtmlEmail. If I run the code below, I get an email with an attachment, but the HTML message comes across as an attachment also.

If I don't call email.attach() the HTML message come through as you would expect, but I need both the HTML message to come through and the attachment. What am I missing?

<pre><code> HtmlEmail email = new HtmlEmail();
 email.setHostName("localhost");
 email.addTo("test@mail.com", "Test");
 email.setFrom("testapp@mail.com", "Test App");
 email.setSubject("Test message");
 email.setHtmlMsg("&lt;div style='font-size: 20px; color: green;'&gt;This is html email&lt;/div&gt;");

 EmailAttachment attachment = new EmailAttachment();
 attachment.setPath(pdfPath);
 attachment.setDisposition(EmailAttachment.ATTACHMENT);
 email.attach(attachment);

 email.send();
</code></pre>

How to attach a file to an HTML email using Apache Commons Email

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在使用，但我不知道如何将文件附加到HtmlEmail。如果我运行下面的代码，我会收到一封带有附件的电子邮件，但HTML消息也会作为附件出现。如果我不调用email.attach()，超文本标记语言消息就会像你所期望的那样通过，但是我需要超文本标记语言消息和附件。我遗漏了什么？  HtmlEmail email = ...

问如何使用Apache Commons电子邮件将文件附加到HTML电子邮件
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